Abstract: Methods are provided for controlling the formation of defects in sheet glass produced by a fusion process which employs a zircon isopipe. The methods comprise controlling the temperature profile of the glass as it passes over the isopipe so as to minimize both the amount of zirconia which diffuses into the glass at the top of the isopipe and the amount of zircon which comes out of solution at the bottom of the isopipe.

Abstract: An aluminosilicate glass having a composition comprising, as calculated in weight percent on an oxide basis, of 40-57% SiO.sub.2, 2.0-11% Al.sub.2 O.sub.3, 1-16% CaO, 8-21.5% SrO, 14-31.5% BaO, 0-3% MgO, and 0-4% B.sub.2 O.sub.3, the glass having a temperature not over 1450.degree. C. at a viscosity of 20 MPa.multidot.s (200 poises), a CTE of 60-90.times.10.sup.-7 /.degree. C. and a strain point over 630.degree. C.

Abstract: A flat panel display comprising an aluminosilicate glass panel that exhibits a strain point higher than 640.degree. C., a weight loss less than 20 mg/cm.sup.2 after immersion for 24 hours in an aqueous 5% by weight HCl solution at 95.degree. C., a CTE in the range of 31-57.times.10.sup.-7 /.degree. C., is nominally free of alkali metal oxides and has a composition consisting essentially of, as calculated in percent by weight on an oxide basis, 49-67% SiO.sub.2, at least 6% Al.sub.2 O.sub.3, the Al.sub.2 O.sub.3 being 6-14% in conjunction with 55-67% SiO.sub.2 and 16-23% in conjunction with 49-58% SiO.sub.2, SiO.sub.2 +Al.sub.2 O.sub.3 >68%, 0-15% B.sub.2 O.sub.3, at least one alkaline earth metal oxide selected from the group consisting of, in the proportions indicated, 0-21% BaO, 0-15% SrO, 0-18% CaO, 0-8% MgO and 12-30% BaO+CaO+SrO+MgO.

Abstract: A barium aluminosilicate glass for production of a panel in an LCD device and a method of producing the panel. The glass consists essentially of, as calculated in percent by weight on an oxide basis, 50-65% SiO.sub.2, at least 8% Al.sub.2 O.sub.3, the Al.sub.2 O.sub.3 being 8-13% in conjunction with 55-65% SiO.sub.2 and 18-22% in conjunction with 50-55% SiO.sub.2, SiO.sub.2 +Al.sub.2 O.sub.3 >68%, 0-8% B.sub.2 O.sub.3, 2-21% BaO, 0-13% SrO, 0-18% CaO, 0-6% MgO and 13-30% BaO+CaO+SrO+MgO.

Abstract: This invention is related to glasses for use as substrates in flat panel display devices; more specifically, for use as substrates in LCDs which utilize polycrystalline silicon thin film transistors. The compositions for the inventive glasses are essentially free from alkali metal oxides and consist essentially, in mole percent, of______________________________________ SiO.sub.2 64-70 Y.sub.2 O.sub.3 0-5 Al.sub.2 O.sub.3 9.5-14 MgO 0-5 B.sub.2 O.sub.3 5-10 CaO 3-13 TiO.sub.2 0-5 SrO 0-5.5 Ta.sub.2 O.sub.5 0-5 BaO 2-7 Nb.sub.2 O.sub.5 0-5 MgO + CaO + SrO + BaO 10-20.

Abstract: A method of constructing a fuel cell includes a sintering technique that improves the structure and performance of the fuel cell elements. The method includes furnishing a fuel cell core comprising trilayers of anode, cathode, and interconnect layers, and trilayers of anode, cathode, and electrolyte layers. Each of the layers has a mixture of the respective anode, cathode, or interconnect ceramic material mixed with processing aid materials including a binder and a plasticizer, and, in the case of the interconnect mixture, optionally a flux. This partially fabricated fuel cell core is sintered to form a monolithic structure, the step of sintering being performed by heating the core at a heating rate of greater than about 40.degree. C. per minute to a sintering temperature of from about 1550.degree. to about 1600.degree. C., maintaining the core at the sintering temperature for a time of from about 5 to about 20 minutes, and cooling the sintered structure.

Abstract: A flat panel display comprising an aluminosilicate glass panel that exhibits a strain point higher than 640° C., a weight loss less than 20 mg/cm2 after immersion for 24 hours in an aqueous 5% by weight HCl solution at 95° C., a CTE in the range of 31-57×10−7/° C., is nominally free of alkali metal oxides and has a composition consisting essentially of, as calculated in percent by weight on an oxide basis, 49-67% SiO2, at least 6% Al2O3, the Al2O3 being 6-14% in conjunction with 55-67% SiO2 and 16-23% in conjunction with 49-58% SiO2, SiO2+Al2O3>68%, 0-15% B2O3, at least one alkaline earth metal oxide selected from the group consisting of, in the proportions indicated, 0-21% BaO, 0-15% SrO, 0-18% CaO, 0-8% MgO and 12-30% BaO+CaO+SrO+MgO.